Engraving and routing machine



Oct. 11, 1932. M. w. HAYNES ENGRAVING AND ROUTING MACHINE Filed July 15. 1930 2 Sheets-Sheet 1 INVENTOR Merrill Wfiayizes BY %WITNESSES ATTORN EYS Oct. 11, 1932. M. w. HAYNES ENGRAVING AND ROUTING MACHINE Filed July 15, 1930 2 Sheets-Sheet 2 Mag ATTORN EYS Patented Oct. 11, 1932 PATE OFFICE mnnnrrr' w; ,HHAYNES, or o'nnnronn, new JEnsEv nnemvmq AND noorme mnonma Applica tion filed- July 15, 1930 Serial NIL-468,088.

. This invention relates to engraving and routing machines, the object being to provide an improved construction forengraving or routing differentprinting plates or blocks, but particularly for cutting away or recess ing areas of the block so as to leave in relief the portions thatare toprint. 9 V I V Anotherobjectof the present invention is to provide a new construction of anengraving and routing machine'wherein the removed chips are drawn away asthey are disconnected from the block.

A further object more specificallyis to provide an engraving and routing machine which may be placed-on a bench or may be mounted on independent legs and readily actuated by the operator to be moved into operatingposition and to automatically move, out ofoperating position when released.

In the accompanying drawings Figure l is-a perspectiveview' disclosing an embodiment of the invention mounted on a bench; a I

- Figure 2'is a sectional view through Figure 4 approximately onthe line 2 2;

Figure 3 is a top plan view of the structure shown in: Fig; 1,- certain parts being broken away;

Figure 4 is a se 3 approximately on the line 44;

Figure 5 is a fragmentarysectlonal view through Figure 4on the line 5-5;

Referring to the accompanying drawings tional View through Figure by numerals, l'indica tes a bench on which the bed 2 ofthe machine is mounted, saidbed being providedwith lugs 3 adapted to engage one edge of the bench 1 so that there w llbe an ample overhangingsection 4whereby'the cord 5 from lever 6 may properly function and maybe properly connected to the treadle7. The connections 8 are adjustable by a suitable sleeve and set screw whereby the effective length of the cordor cable 5 may be varied. The device has beenshown on a bench in Figure l but it will be evident that it can be mounted at other places or on legs temporarily or permanently connected with the bed 2.

Mounted on the, bed 2, and preferably formed'i'ntegral therewith is a-hollow bracket or supporting arm Qwhichis, adapted to support the reciprocating base 10 and associated parts hereinafter fully described. 7 Preferably the bed 2 is hollow, 'as shown in Figure 4,Vand carries a fitting 11 which supports the pin 12 extending through the lever 6 so that the lever may swing upwardly and downwardly as desired."

At thepoint 13'lever 6 is pivotally connected with link 14, which in turn is pivotally connected at 15 to the actuating lever 16, said actuating lever havinga bifurcated end '17 with the respective legs of the bifurcation. fitting over the trunnions 18 of, the trunnioned block or nut 19. r The actuating lever 16 is provided with a slot 20 for accommodating the pivotal pin 21, said pin being mounted on, the arm 9 so that as. the link 14 moves upwardly and downwardly arm 16 may swing upward and downwardly and may also slide within certain limits.

Theinternally threaded block or nut'19 accommodates the screw 22, which screw extends loosely through the bearings 23 and 24, said bearings being preferably inte al with the arm 9'but acting as vertical guides forthe, screw 22. This screw is provided with a stop 25 adapted to. engage the under surface of the extension 26 of base 10.

A thumb member 27 is pinned or otherwise secured to screw 22 and. rests on the upper surface of extension 26 so that there is no longitudinalmovement of screw 22 independent of the extension 26, although free rotary movement is allowed at' all times. It will thus beseen that when the screw is rotated in one direction, it raises the sliding base 10 and the electric motor 28 therewith in respect-"tonut 19. This is'to provide for adjustment to allow a greater or less depth ofcut, but when it is desired to move the cutting or engraving' implement from the block-29 being engraved, the foot of the operator is removed from treadle 7 and spring 30 will move the parts automatically to an inoperative. position with the engraving tool and associated parts raised an appreciable distance above the block 29..

In connection with spring 30 is will be noted that one end of the same is connected to the pivotal pin :15 and-the other end to the lower part of arm 9, whereby the tendency of the spring at all times is to swing the right end of lever 16, as shown in Figure 4, downwardly and thento move the nut 19 upwardly. This naturally moves the screw 22 upwardly together with the base 10, the motor 28 and associated parts.

A suitable chuck 32 is carried by the armature shaft 33 and the cutter 34 is carried by this chuck. The suction fan 35 is connected to the shaft 33 and is arranged in a suitable housing 36. The pipe 37 extends fromthis housing and is provided with an ad justable extension 38 whereby the intake;

end 39 may be raised and lowered as required. The end 39'is bent to extend almost horizontally and is designed to be very near the cutting tool 34 so that as the material is cut from block 29 it is drawn away; thereby the doing.

By this arrangement, the matter removed bythe cutter is drawn off through the pipe '37 by reason of the suction produced by the fan -35,*and this matter is discharged out through the flexible hose 31 which may extend to any desired point, preferably to the rear of the machine and below the bed 2.

7 It will be noted that the openings 40 and 45 permit air to be drawn in through the motor casing, whereby'the armature and field of the motor are cooled. Ordinarily the supporting block 41 carrying plate or sheet 29 maybe moved freely in any direction according to the wish of the operator. However, when it is desired to cut straight lines a guide 42 is provided carried by'the rod 43 rigidly clampedin different adjusted positions by the screw 44.

In operation normally the motor 28, cutting tool 34 and associated parts are in a raised position. The operator then places a plate 29 with its block 41 on bed 2, after placing in the chuck 32 a suitable cutting tool. He then, places his foot on treadle'7 and forces the same downwardly, whereupon the cutting tool 44 will be brought down into working position. The relative position of the nut 19 and screw 22 determines how far down'the parts will be moved and by adjusting screw22 the depth of the engraving may be determined. Preferably the screw 22 is adjusted before beginning tocut the plate.

"Having adjusted the parts as desired the operator moves the block back and forth in any direction desired to permit tool 34 to function. Hemay out very fine designs and do very accurate-work easily by reason of the fact that the blower acting through the nozzle 39 will instantly remove the chips so that he can always see exactly where he is cutting or routing- -The plate or block 29 may be of any desired material used in printing, and it is; ofcourse, evident that the cutoperator' may readily see what he is ting may be of any desired depth according to circumstances.

What I claim is:

1. An engraving machine comprising a bed, a hollow arm extending upwardly from said bed, a pivotally mounted lever positioned on the under side ofsaid bed, foot operating means forswinging said lever-in one direction, a link connected to one end of said lever, a spring for moving the link and lever in one direction, an actuating lever pivotally connected with said link, an internally threaded block carried by said actuating lever, a screw fitted into said block, bearings for guiding'said screw, said bearings being carried by said arm, a base slidably mounted on said arm, said base carrying said screw in a manner whereby the screw is free to rotate but cannot move longitudinally independent ly of the base, an electric motor rigidly secured to said base, means for securing a cutting tool to the armature shaft of said motor, a suction fan operated by said motor, and means forapplying suction from said fan to a pointadjacentsaid cuttingtool whereby the chips from the cutting tool will be drawn away. i 2; An engraving machine including a motor, means for connecting a cutting tool thereto, a sliding base, said motor being mounted on said base so as to-be moved therewith, a screw 1110111113661 to rotate in said base but not moved longitudinally, an internally threaded trunnioned block threaded'on to said screw, a bifurcated lever engaging the trunnion of said block for raising the screw, base and motor, means for. pivotally supportingv said lever, said means including a pair of aligned bearings through which said screw extends, said bearings limiting the upward and downward movement of said block, and means for swinging said leverso as to move the motor into and out of functioning position, said screw being adapted to be rotated for adjusting the vertical plane of the motor and tool with respect to said block whereby the tool may cut out different depths according to the adjustment provided.

. '3. An engraving machine including a base,

an L-shaped arm extending from said base, said arm at the free end having guiding grooves, a reciprocating base having flanges fitting in said guiding grooves, a screw carried by said reciprocating base and mounted thereon to rotate but not to reciprocateindependently of the reciprocatingbase, means carried by said arm for guiding said screw, an internally threaded trunnioned block arranged between said means and threaded on to saidscrew, a leverpivotally mounted on said arm and pivotally connected with the trunnions of said block whereby when the lever-is swung back and forth said-block, said screw and said reciprocating base .will be moved accordingly, said screw; being adapted to be rotated for adjusting the reciprocating base in respect to the block, spring means for moving said lever in one direction, I foot operated means for moving the lever in the opposite direction, a motor carried byv said reciprocating base, and means for connecting a cutting tool to said motor.

4. An engraving machine comprising a bed, a pivotally mounted lever, foot operat- 'ing means for swinging said lever in one direction, a link connected to one end of said lever, a spring for moving the link and lever in the opposite direction, an actuating lever pivotally connected with said link and an internally threaded block pivotally mounted on said actuating lever, a screw fitting into said block, stationary bearings for guiding said screw as the same is reciprocated, said bearings being carried by said arm, a base slidably mounted on said arm, said base carrying said screw in a manner whereby the screw is free to rotate but cannot move longitudinally independently of the base, a driving member secured to said base and means for securing a cutting tool to said guiding member, said guiding member, cutting tool, base and associated parts being adapted to be moved upwardly by said spring and downwardly by said foot operating means.

MERRITT W. HAYNES. 

